Heel-making machine



Oct. 15, 1929.

c. l. PLLARD 1,731,589

HEEL MAKING MACHINE Filed Feb. 4. 1927 4 Sheets-Sheet 1 NVENTOR 4 Sheets-Sheet Filed Feb. 4. 1927 INVENTOR ATTORNEY `Chet, 15, 1929. c. l. PoLLARD HEEL MAKING vMACHINE Filed Feb- 4. 192'? 4 Sheets-Sheet 5 f7 915 F/G. e f7@ 7 INVENTOR C/Q/L QY 6th/5am ATTORNEY C. l. POLLARD HEEL MAKING MACH-INE Oct. l5, 1929.

Filed Feb. 4. 1927 4 Sheets-Sheet 4 INVENTOR ATTORNEY Zik) Patented Oct. 15, 1929` PATENTr OFFICE vCARI. i. POLLARD, oF WHEELERSBURG, OHIO HEEL-MAKING MAGHINE Application filed February 4, 1927. Serial No. 165,799.

a heel concaving machine in which I have provided a novel form of table, removable plate for receiving a cutter and the heel, a novel mechanism and method of holding the heel while it is being cut and a novel arrangement for regulating the depth and taper of cutting.

In particular it is my object to provide means of concaving a heel without necessitating the use of holders operated by cams and which will be adaptable to take any type ot heel, even a very low heel.

Referring to the drawings,

Fig. 1 is a plan view of my machine eml'i-:nlying` my invention;

Fig. 2 is a side elevation thereof;

Fi 3 is a section on the line 3-3 of Fig. 1;

Fi 4 is a section on the line 4-4 of Fig. 3;

Fig. 5 is a side elevation of a heel block;

6 is a front elevation thereof before the block has been concaved;

Fig. 7 is a front elevation ther-cof afterthe concaving operation has taken place;

Fig. 8 is a section on the line 8 8 of Fig. 2;

Fig. 9 is a section on the line 99 of Fig. 2;

10 is a detail plan View showing the arrangement of the removable plate.

Referring to the drawings in detail, 1 refers to the legs which support the horizontal members 2 of the frame. This frame carries wer shaft 3 which is driven by a pulley 4 im any suitable sourceV of power. This pov-er shaft is provided with a clutch 5 operated by the clutch lever 6 which starts and stops the power mechanism. This clutch Vleveeis connected to an operating shaft 7 sliding in a sleeve 8 in the frame member 2. The other end of the operating shaft is provi .led u' i th a roller 9 adapted to be engaged by a mojeeting linger 10 the purpose of which willv be hereinafter described. This clutch e. n $3 is, connected to a hand lever 11 pivoted ai. l2 on a bracket 13 on the fra-me.

"ihv shaft 3 carrying the clutch 5 is provided with a bevel gear 14 which meshes with a bij-,vel gear 15 carried on a shaft journaled in the cross-member 16 of the frame on the other end of which shaft, which is designated 17, is mounted the cam disc 18 having a cam groove 19 and provided with a low point 20 and a high point 21. In this cam travels a cam pin 22 mounted on an arm 23 which is pivoted at 24 on the cross frame member 16. The upper end of this arm is provided with an eye through which passes a pitman 25. On the pitman are a pair of spaced collars 26 so that between the eye of the arm 23 at each of these collars there can be located a spring 27 to form a yielding connection between the lever 23 and the pitman 25. This pitman is connected at its other end to the lateral positioning arms which are connected by a yoke 28. 29 designates the pivotal connection of the pitman. The arms are designated 30 and are pivoted at 31 upon the table 32. The free ends of these arms are provided with guiding rollers 33 which engage with the sides of the reciprocating slide 34 which is guided in a cut-away portion 35 in the table 32. It is this reciprocating table 34 which carries the heel holder- The table itself is provided with a pair of plates having` arcuate sides, such plates being designated 35. The plates are mounted by a bolt or screw 36 on the reciprocating member 34 and have their free forward ends adjustable by means of a set screw 37 working in a slot 38 in the plates 35. The outer edges or sides of t-hese plates engage the stationary supported, rotative-ly mounted rollers 39 which are held in the adj ust-able holders 40. These rollers determine Y the exact amount of lateral movement which may be imparted to the reciprocating member 34. It will be understood that this member 34 is pivoted at 41 to a block 42 which moves' in the guides 43 in the table 32. Thus the reciprocating slide 34 is adapted to have a lateral movement depending upon the position of the positioning rollers 33 and the arms 30 and a reciprocating movement, such reciprocating movement being imparted to it by the following mechanism. The shaft 3 is provided with a crank 44 to which is connected a link 45. This link is pivotally con-` nected to a depending arm 46. This arm has pivotally connected to it another link 47 and is adjustably mounted at its other end in a crank arm a8 pivoted at i9 on the leg l and carrying on its pivotal end a cam surface adapted to engage With a cam roller 5l which is pivotally mounted on the end oit a slide 52 carried in a guide 53 on the upper end ot the leg l. The adjustable end 54 of this slide engages With the under surface oi' the table 32 so that the table is moved up and down at its free end adjacent to and about its pivotal support on the trame at 55.

The reciprocating member Se carries an adjustable slotted arm 56 in which is located a set screw or bolt that adjusts the position ot this arm. This arm carries a head 58. @n either side ot' the head are mounted side members 59 between the free ends of which there is located the heel retaining block 60 which embraces the rear of the heel While the tor- Ward face of the heel is engaged by an arcuate replaceable member 61 carried by the head 58. The heel is prevented from moving upwardly by the overhanging arm G2 and an adjustable engaging screu7 63 depending therefrom which engages the bottom 01"' the heel, as the heel is in upside down position as it normally appears on a shoe, so that its upper surface can be concaved or grooved.

This brings me to one of the most important features ot my invention, namely, the use in the platform 32 of a detachable, removable plate 64 which is located in a cut-away portion of the platform. rlhis plate is oie sott Wood, libre or soft metal and is adapted to have a portion cut therethrough which is oi the same dimensions as the milling cutter G5 which is carried on the shaft 66 that drives it. This plate is retained in position by detachable supports 6i' on the bottom oi' the platform 32. The cutter is adapted to project through the removable plate and slightly above it so that as the heel is rcciprocated over it it will cut a narrow groove out of the heel, the Width of Which is determined by the lateral position imparted to the heel. This lateral positioning of the heel is controlled through the cam plate 18 and its associated mechanism which serves to shift the arms 30 and the position of the guiding` rollers 33 Which in turn moves the slide 3l about its pivot ll and determines the enact direction of its reciprocation. By controlling and justing the cam mechanism it is possible to vary the Width of the groove.

The depth ot the cut is determined by the adjustment et the scren7 5l Il' a tapering cut is desired the nature and depth ot the taper and the ratio of the taper is determined by the position and adjustment of the arm 48.

In handlingthe removable plate Gil, which may be made ot any so'l't material it is my practice to insert it in the table 82 allowing' it to drop on the cutter Which cuts a hole e2;- actly the same size as the cutter'. As there is a margin around the heel et nearly onesixteenth of an inch a heel may be cut out Without any danger of it falling through the hole formed by the cutter. By this method the heel is concaved Without the necessity of having clamping holders operated by cams and l am enabled to provide a mechanism which Will take any hind ot a heel, even very lovv heels, which are ordinarily very difficult to handle in the concaving machines lrnoivn in the art.

l have thus provided in one machine, in adjustable form, a simple mechanism for accomplishing the following:-

(l) rlChe regulation of the depth of the concavity.

(2) The regulation of the Width of the concavity.

Vllhe regulation of the taper of the concavity.

(a) 'lhe handling of any type or heel in the saine mechanism With slight adjustment or the substitution of minor holding parts.

Means for irmly holding the heel on the trent, back and top and for moving it bach and forth over the cutter.

(6) A detachable, readily changeable cutter guard formingl a part of the supporting table so as to regulate the degree of the cutting action, While at the same time providing a table portieri associated With the Cutter which will not injure it yet which Will properly support the heel being passed over it.

ln orner to quickly detach the heel l have provided that the holder for the rear portion et the heel, designated 60, be pivoted to the side arms 59 and be actuated by a handle 68 so that hy a quick movement the rear holder 60 can be turned upwardly out of the Way and the completed heel extracted and a new heel inserted in its place.

The plates 35 are used for the purpose ot detern'iining the shape of the cut.

The projection l0 rotating with the cani member 18 at the end of a cycle of operations is adapted to throw the clutch lever 6 and the clutch 5 so that the cycle of operations, which imparts to the heel the proper' concavity, will be terminated and the power disconnected.

llt Will be understood that I desire to coinprehend Within my invention such modilication as may be necessary to adapt it to varying` conditions and uses.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is z- 1. In a heel concaving machine, a table, means to reciprocate a heel, a cutter to concave .a heel supported adjacent the table, a detachable guard for the cutter, means to guide the reciprocating means in the direc tion ot the cut, means comprising a plurality of arms pivoted to the table to guide the reciprocating means in a direction laterally of the cut, and means to hold said heel in said reciprocating means.

2. ln a heel concaving machine, a table,

means to reciprocate a heel, a cutter to concave a heel supported adjacent the table, a detachable guard for the cutter, means to guide the reciprocating means in the direction of the cut, means comprising a plurality of arms pivoted to the table to guide the reciprocating means in a direction laterally of the cut, and means to hold said heel in said reciprocating means, and means to render said reciprocating` means inoperative upon the accomplishment of the concaving operation.

3. In a heel concaving machine, means comprising front, top and movable rear engaging portions adapted to hold a heel to move it over a cutter, a cutter, and a detachable frame guarding said cutter and adapted to support said heel as it passes thereover.

4. In a heel concaving machine, means to hold a heel to move it over a cutter, a cutter, a detachable frame guarding said cutter and adapted to support said heel as it passes thereover, means to reciprocate said heel holding means, and means to control the lateral position oit the out.

5. In a heel concaving machine, means to hold a heel to move it over a cutter, a cutter, a detachable frame guarding said cutter and adapted to support said heel as it passes thereover, means to reciprocate said heel holding means, means to control the lateral position of the cut, and means to regulate said lateral positioning means in order to impart a series of laterally disposed cuts in said heel.

6. In a heel concaving machine a reciprocating means adapted to hold a heel, a table for said reciprocating means, a cutter, a detachable guard mounted in said table adapted to support said heel and guard said cutter and means for regulating the elevation ott' said table with respect to said cutter.

7. In a heel concaving machine a reciproeating means adapted to hold a heel, a 'table support for said reciprocating means, a cutter, a detachable guard mounted in said table adapted to support said heel and guard said cutter, means for regulating the elevation of said table with respect to said cutter, and means to regulate the taper of the cut in said heel.

8. In combination a movable supporting table, a reciprocating heel holding slide mounted thereon and moving therewith, a cutter adapted to project through said table and means for varying the height of said table adjacent said cutter to impart a taper to the concavity orp the cut in the heel.

9. In combination a movable supporting table, a reciprocating heel holding slide mounted thereon and moving therewith, a cutter adapted to project through said table and means for varying the height of said table adjacent said cutter to impart a taper to the concavity of the cut in the heel, means to change the elevation oi? said table for controlling the taper' and to simultaneously drive the reciprocating slide.

10. In combination a movable supporting table, a reciprocating heel holding slide mounted thereon and moving therewith, a cutter adapted to project through said t-able and means for varying the height of said table adjacent said cutter to impart a taper to the concavity of the cut in the heel, means to change the elevation of said table for controlling the taper and to simultaneously drive the reciprocating slide, means carried on said table for regulating the lateral posiion of said reciprocating heel holding mem-` 1 1. In combination a movable supporting table, a reciprocating heel holding slide mounted thereon and moving therewith, a cutter adapted to project through said table and means for varying the height of said table adjacent said cutter to impart a taper to the concavity of the cut in the heel, means to change the .elevation of said table for controlling the taper and to simultaneously drive the reciprocating slide, means carried on said table for regulating the lateral position of said reciprocating heel holding member, and means for successively varying the lateral positioning means and the resulting lateral position of said heel supporting member to impart a series of parallel cuts to said heel.

12. In combination a movable supporting table, a reciprocating heel holding slide mounted thereon and moving therewith, acutter adapted to project through said table and means for varying the height of said table adjacent said cutter to impart a taper to the concavity of the cut in the heel, means to change the elevation of said table for controlling the taper and to simultaneously drive the reciprocating slide, means carried on said table for regulating the lateral position ofsaid reciprocating heel holding member, and means for successively varying the lateral positioning means and the resulting lateral position oit said heel supporting member to impart a series of parallel cuts to said heel, and means associated therewith to render inoperative the driving means when said concaving operation has been nished.

13. In combination a movable supporting table, a reciprocating heel holding slide mounted thereon and moving therewith, a cutter adapted to project through said table and means for varying the height of said table adjacent said cutter to imparta taper to the concavity oi' the cut in the heel, and a detachable guard mounted in said table beneath said reciprocating member adapted to project said heel, regulate the depth of the cut and support said heel.

, 14. In combination a movable supporting table, a reciprocating heel holding slide Lso mounted thereon and moving therewith, a cutter adapted to project through said table and means -for varying the height of said table adjacent said cutter to impart a taper to the concavity oit' the cut in the heel, means to change the elevation of said table for controlling the taper and to simultaneously drive the reciprocating slide, and a detachable guard mounted in said table beneath said reciprocating member adapted to project said heel, regulate the depth oit' the out and support said heel.

l5. In combination a movable supporting table, a reciprocating heel holding slide mounted thereon and moving therewith, a cutter adapted to project through said table and means for varying the height orp said table adjacent said cutter to impart a taper to the concavity of the cut in the heel, means to change the elevation ot said table for controlling tl e taper and to simultaneously drive the reciprocating slide, means carried on said table Jfor regulating the lateral position of said reciprocating heel holding member, and a detachable guard mounted in said table beneath said reciprocating :member` adapted to proje said heel, regulate the depth of the cut and support said heel.

1G. In combination a movable supporting table, a reciprocating heel holding slide mounted thereon and moving therewith, a cutter adapted to project through said table and means for varying the height ot said table adjacent said cutter to impart a taper to the concavity of the cut in the heel, means to change the elevation of said table tor controlling the taper and to simultaneously drive the reciprocating slide, means carried on said table for regulating the lateral position oia said reciprocating` heel holding member, and means tor successively varying the lateral positioning means and the resulting lateral position ot said heel supporting member to impart a series of parallelL cuts to said heel, and a detachable guard mounted in said table beneath said reciprocating member adapted to project said heel, regulate the depth of the cut and support said heel.

17. In combination a movable supporting table, a reciprocating heel holding ul'de mounted thereon and moving therewith, a cutter adapted to project through said table and means tor varying the height ot said table adjacent said cutter to impart a taper to the concavit-y of the out in the heel, means to change the elevation ot said table for controlling the taper and to simultaneously drive the reciprocating slide, means carried on. said table for regulating the lateral position et said reciprocating heel holding member, and means for successively varying the lateral positioning means and the resulting lateral position of said heel supporting member to impart a series ot parallel cuts to sait heel, and means associated therewith to ren- :der inoperative the driving means when said concaving operation has been finished, and a detachable guard mounted in said table beneath said reciprocating member adapted to project said heel, regulate the depth of the cut and support said heel.

18. ln a concaving machine having a frame, a tab`e, a reciprocating slide, a heel supportg member adapted to be supported by said able and pivoted on said slide, adjustable means for moving said heel holding member about its pivot on the slide, a cutter adapted vto project through said table to engage With the heel, and means for reciprocating said slide.

19. in a concaving machine having a rame, a table, a reciprocating slide, a heel apport-ing member adapted to be supported iv said table and pivoted on said slide, adjuste means for moving said heel holding nib-er about its pivot on the slide, a cutter to project through said table to eni the heel, and means for reciprocatld slide, and means in combination With e reci procatino' means for successively ad the position of the means for deteri' the lateral position oi the heel sups about its pivot on the slide.

a concaving machine having a tabe, a reciprocating slide, a heel g member adapted to be supported .o and pivoted on said slide, ad- `ins 'for moving said heel holding atout its pivot on the slide, a cutter o project through said table to enth the heel and means ior reciprocatd slide, and means in combination with rocatin means for successively adg' tue por "on oiI the means tor deteri' the lateral position ot the heel sup- Lm means about its pivot on the sl'rle, and means to regi ate the shape oit the cut.

2l. ln a concaving machine having a e ne, table, a reciprocating slide, a heel supporting member adapted to be supported by said table and pivoted on said slide, adjustable means for moving said heel holding member about its pivot on the slide, a cutter a,apted to project through said table to engage Witn the heel, means for reciprocating` said slide, means in combination with the reciprocating 'tor successively adjusting the position of the means for determining the lateral position o1 the heel supporting means about its pivot on the slide, means to regulate the shape oi' the cut, and means to regulate the taper oit the cutn 22. ln a concaving machine having a trame, a table, a reciprocating slide, a heel supporting member adapted to be supported by said table and pivoted on said slide, adjustable means for moving said heel holding member about its pivot on the slide, a cutter adapted to project through said table to engage With the heel, means for reciprocating said slide, means in combination with the reciprocating means for successively adjusting the position of the means for determining the lateral position of the heel supporting means about its pivot on the slide, means to regulate the shape of the cut, means to regulate the taper ot' the cut, and means to impart a taper to the cut by the cutter.

23. In combination a trame, a table pivoted thereon, means to raise and lower one end of the table, a reciprocating slide mounted in said table, a heel holder pivoted thereon, means for adjusting the heel holder pivotally on its slide, means engaging the sides of the heel holder alternately for determining the shape oit the cut, a cutter adapted to project through the table, and means for successively adjusting the means that determine the lateral position of the heel holding means.

24. In combination a frame, a table pivoted thereon, means to raise and lower one end of the table, a reciprocating slide mounted in said table, a heel holder pivoted thereon, means for adjusting the heel holder pivotally on its slide, means engaging the sides of the heel holder alternately for determining the shape of the cut, a cutter adapted to project through the table, means for successively adjusting the means that determine the lateral position of the heel holding means, said lateral positioning means, means for raising and lowering the table, and reciprocating means being driven from a common source of power.

25. In combination a frame, a table pivoted thereon, means to raise and lower one end of the table, a reciprocating slide mounted in said table, a heel holder pivoted thereon, means for adjusting the heel holder pivotally on its slide, means engaging the sides of the heel holder alternately for determining the shape of the cut, a cutter adapted to project through the table, means for successively adjusting the means that determine the lateral position of the heel holding means, said lateral positioning means, means for raising and lowering the table, reciprocating means being driven from a common source of power, and means for rendering the machine inoperative after a cycle of operations has been completed.

26. In a concaving machine a heel holder consisting ozt a front engaging portion, a top engaging portion, a rear engaging portion, and means for rotatively connecting the rear engaging portion to the front engaging portion so that the rear engaging portion may be moved out of position to permit of the insertion of the heel.

27. In a concaving machine a heel holder consisting of a head, a detachable front engaging portion, arms connected with said head, a rotatively mounted rear engaging portion carried by said arms and an adjustable top engaging portion mounted on the ead and extending over the bottom of the eel.

28. In a heel concaving machine a concaving cutter, a detachable guard therefor, means comprising front, top and movable rear engaging portions adapted to hold the heel and to move it with respect to said cutter, means to regulate the depth of the cut, means to regulate the width of the cut, and means to regulate the shape of the cut.

29. In a heel concaving machine ay concaving cutter, means to hold the heel and to move it with respect to said cutter, a detachable guard therefor, means to regulate the depth of the cut, means to regulate the width of the cut, means to regulate the taper of the cut, and means to regulate the shape of the cut.

In testimony whereof, I aliiX my signature.

CARL I. POLLARD. 

